Journal of Materials Science

, Volume 26, Issue 15, pp 4123–4129 | Cite as

Dynamic moduli of CaCO3- and Mg(OH)2-filled polypropylene

  • J. Jančář
Papers

Abstract

Fillers suppressed the temperature dependence of storage modulus and caused the flattening of the temperature dependence of the loss modulus in the glass transition region of polypropylene (PP). The glass transition temperature ({ie4123-01}) of PP did not change with filler content (vf). This indicates that none of the fillers affect the mobility of PP in the bulk. A new loss maximum appeared at 50 °C forvf>0.2. This maximum became more prominent when increasing either the filler content or filler specific surface area. Interparticle interactions, leading to the space network of weakly bonded particles, affected PP mobility indirectly. The enhanced interfacial adhesion led to a further decrease of PP mobility near {ie4123-02} and to the increase of the new loss maximum at 50 °C.

Keywords

Polymer Transition Temperature Specific Surface Glass Transition Polypropylene 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    K. Mitsuishi, S. Kodama andH. Kawasaki,J. Appl. Polym. Sci. 32 (1986) 4229.Google Scholar
  2. 2.
    Idem., Polym. Compos. 9 (1988) 111.Google Scholar
  3. 3.
    D. M. Bigg,ibid 8 (1987) 115.Google Scholar
  4. 4.
    P. N. Hornsby andC. L. Watson,Plast. Rubb. Proc. Appl. 6 (1986) 169.Google Scholar
  5. 5.
    S. Miyata,et al.,J. Appl. Polym. Sci. 25 (1980) 415.Google Scholar
  6. 6.
    J. Kolařik, G. L. Agrawal, Z. Kruliš andJ. Kovář,Polym. Compos. 7 (1986) 463.Google Scholar
  7. 7.
    Gy. Marosi,et al.,Coll. Surf. 23 (1986) 185.Google Scholar
  8. 8.
    B. Pukanszky andF. Tüdös, in “Proceedings of the International Conference on Interface in Polymer Composites”, Cleveland, OH, edited by H. Ishida (Elsevier, New York, 1988).Google Scholar
  9. 9.
    R. Boyd,Polymer 26 (1985) 323.Google Scholar
  10. 10.
    Idem, ibid. 26 (1985) 1123.Google Scholar
  11. 11.
    J. Kučera andJ. Kolařik, in “MPC Symposium on Mechanics of Polymer Composites”, edited by R. A. Bares, Prague 1986, p. 746.Google Scholar
  12. 12.
    J. Jančář, J. Kučera andP. Veselý,J. Mater. Sci. Lett. 7 (1988) 1377.Google Scholar
  13. 13.
    J. Brož, V. Roskovec andM. Valouch, “Physical and Chemical Tables” (SNTL, Prague, 1980).Google Scholar

Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • J. Jančář
    • 1
  1. 1.Institute of Materials ScienceStorrsUSA

Personalised recommendations